Dispositions	3 Months Ended
Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
Dispositions	Dispositions International Segment In the first quarter of 2019, we entered into an agreement to sell our U.K. business (Marathon Oil U.K. LLC and Marathon Oil West of Shetlands Limited). This transaction closed on July 1, 2019 for proceeds of $95 million which reflects the assumption by RockRose Energy PLC (“RockRose”) of the U.K. business’ cash equivalent balance and working capital balance as of year-end 2018. Our income before taxes relating to our U.K. business for the three months ended March 31, 2019, was $10 million.

The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-URI http://asc.fasb.org/topic&trid=2155823

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-URI http://asc.fasb.org/subtopic&trid=2122178

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